OregonFlora species comparison

3–12(19) dm.

basal leaves usually rosulate; simple;

margins entire, dentate, or lyrate-pinnatifid;

cauline leaves bases auriculate to amplexicaul or neither, petiolate or sessile.

and lowermost cauline (5)10–40(60) × 3–10 (20) cm;

margins entire, dentate, or pinnatisect, with terminal lobes larger than 1–6 lateral lobes on each side, petiolate.

fruiting pedicels ascending to divaricate; (5)10–25(30) mm.

bracts 0.

sepals oblong; (3)4–6.5(8) mm, ascending;

petals obovate; (5)7–10(13) × (2.5)3–6(7) mm, bright yellow, rarely pale or whitish yellow;

claws 3–7 mm;

anthers oblong, 1.5–2 mm;

filaments 4–6(7) mm;

lateral curved at base;

styles obsolete.

sepals oblong or ovate; erect, ascending, or rarely spreading, caducous;

lateral pair usually saccate;

petals > sepals, yellow, rarely white;

blades obovate;

claws often differentiated from blades, nectar glands confluent or not; median glands present;

stamens 6, tetradynamous;

anthers oblong or ovate, obtuse;

ovules (4)10–50 per ovary;

septa complete;

styles distinct;

stigmas entire or 2-lobed.

divaricate to ascending; terete; (2)3–8(11) cm × 2–4(5) mm, valvular segments (1.3)2–5(7.5) cm, 8–15-seeded per locule;

valves with prominent midveins; terminal segments conical; (0.3)1–2.5(3.5) cm; seedless or rarely 1-seeded, sessile.

dehiscent siliques, linear; terete or latiseptate, rarely 4-angled, 2-segmented;

tips acuminate to subulate;

valves prominently 1-veined, glabrous, torulose; replums rounded; terminal segment filiform, conic, or rarely cylindrical; seedless.

1–1.8 mm in diameter.

4+ per fruit, uniseriate, globose;

seed coat reticulate, mucilaginous or not when wetted; wingless;

cotyledons conduplicate.

ovate to lanceolate, 2–8(12) × 0.8–3 cm, bases amplexicaul or auriculate, sessile.

absent or simple.

=20.